Hello Peter,
the baffles were painted orange during the overhaul, the previous colour was grey-blue, and the oil breather tank was fitted shortly after I purchased the aircraft in 2008. I dont know if there was any in the martinair period.
I came across your awesome build during my search for a nichimo 1:20 kit ( i found an unstarted one, it was delivered to me yesterday) .
I will be happy to help you with pictures etc.
best regards.
Bart.